After seeing a terrifying glimpse into the future. Admiral Clara Oswald embarks on a mission where no man has gone before. Through the jaws of the Nightmare Child. What awaits the crew of the new USS Thunderbird is something far more deadly than anything Starfleet has faced before.

Captain Clara Oswald and the crew of the USS Avenger-A are force to track down a stolen bit of information. However as the trail leads them into an odd Space Vortex, that flings them into The Mirror Universe. Clara finds herself coming face to face a very dark version of Amy Pond. Who will do anything to get her hands on the Avenger and put an end to the evil Alliance.

Starfleet has a newly discovered enemy: The Doctor. The 15th Doctor is deemed a threat to the current timeline, though he hasn't yet done any major damage. Everything the Federation has worked for and achieved could be destroyed by a single man. But that won't happen, not if the Enterprise H and her "unique" crew have something to say about it.

The Alpha Quadrant faces a new threat. a threat from a race of Cybernetic lifeforms calling themselves. The Cybermen. However can Captain Clara Oswald help defend the Federation from this deadly threat. Or will The Cybermen conquer the whole Alpha and Beta Quadrants.